R/C Tech Forums - View Single Post - The Speed Passion Thread
View Single Post
Old 12-16-2010 | 05:35 AM
  #6221  
spar9368's Avatar
spar9368
Tech Addict
iTrader: (53)
 
Joined: Mar 2009
Posts: 516
Default

Originally Posted by Solara
Sang:

You indicated it is the SENSOR problem....how can you tell it is a sensor problem..? Motor is cogging? Won't launch? Not moving...?

(1) Turn off the THERMAL protection on the ESC, also, turn off the LIPO Cutoff. Just want to test and make sure there are no cutoff engagment to make the ESC not working...you can turn them back on if the problem solved.

(2) Open up the V3 motor and clean up the SENSOR unit within...just dust off or blow off the dust/sand or whatever that might caused the problem

(3) Run it again.....with the timing ring on the V3 motor at the MIDDLE (5*) position.

Please report your result here....Thanks


Okay, here's my report.

The initial problem I wanted to solve was 'Sensor issue', which can be described as follow.

I ran 3.5T to 5.5T motor at my home track, mostly between 3.5T and 4T, and when I first installed ESC and motor, it was fine for like 30seconds.

And then it suddenly works like no sensor system is working. I don't see any performance difference with or without sensor cable, and I tried 0 DMTS timing and 26.25 timing (value 8), and there was no difference in the performance at all. So basically so far it is safe to say that sensor system has some kind of issue.


Both ESC and motor was brand new, and I thought I might have damaged in that 30sec period, so I've put the new motor and ESC again, and then same thing happens again. Of course I've tried different motors and different cables, and it all goes to the same problem. And on the bottom of the ESC, green light was keep blinking, so I guess it would have some problem.


I've then turned off any sort of protection, and it still does the same thing. Over Heat protection is off, so as voltage cutoff. But it still does the same thing.


When I re-boot the ESC (as in turn off and on again), green light is gone and it just seems fine. And then I try to accelerate a bit, like 30%, then green light is back again flashing. So I guess it is safe to say ESC is doing something wrong. BTW, motor was cogging when I slightly accelerate.



FYI, I have been used about 20 SP V3 motors, and I know a few top drivers at my local track runs pretty much the same timing and gearing, so it shouldn't be this bad. Motor and ESC was never thermalled too. I might try SP V2 motors, but then again I might have some same problems.



If anybody knows any better solution, please let me know.

Last edited by spar9368; 12-16-2010 at 05:29 PM.
spar9368 is offline